A nuclide has a half-life of $10.0$ hours. Its mean (average) life, in hours, is closest to

More questions on Nuclear chemistry: radioactive decay kinetics and half-life

• The nuclide ^238_92U finally changes to the stable ^206_82Pb through a series of alpha and beta^- emissions. The numbers of alpha and beta^-... JEE Main level
• The fraction of a radioactive sample that has decayed after 2.5 half-lives is closest to JEE Main level
• Samples A and B contain equal numbers of atoms initially. The half-lives are 10 min for A and 20 min for B. The ratio (activity of A) : (act... JEE Main level
• Tritium has a half-life of 12.3 years. A sealed sample initially holds 8.0 mg of tritium. Taking decay as the only loss, find the mass of tr... JEE Main level
• The half-life of ^226Ra is 1600 years. Take molar mass 226 g mol^-1, N_A=6.022x10^23, ln2=0.693 and 1 year=3.156x10^7 s. The activity of 1.0... JEE Main level
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